Core for balls of yarn, &amp;c.



A. H. SCHLOERB. cons FOR BALLS 0F YARN, 8w.

APPLICATION FILED OCT. 17- 1918.

Patented Feb. 11, 1919.

IN l/E IV TOR ATTORNEYS Eur cri ics.

ARTHUR H. SCHLOERB, OF NEW YORK, N. Y., ASSI GNOR TO THE AMERICAN THREADCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

CQRE FOR BALLS OF YARN, 8w.

Specification of Letters Patent.

Patented Feb. 111, 1919.

To all whom it may concern:

Be it known that I, ARTHUR H. So rLonRB', a citizen of the UnitedStates, residing at city, county, and State of New York, have invented acertain new and useful Improvement in Cores for Balls of Yarn, &c., of

which the following is a full, clear, and 9X.

act description.

My. invention relates to cores for balls of yarn, thread and the like,and has for its object to produce a simple and accurate core which canbe made at small expense and is adapted to support a ball wound thereon.

The following is a description of an embodiment of my invention,reference being v,had to the accompanying drawing, in which,

Figure l is a longitudinal section through the core showing in dottedlines the yarn wound thereon;

Fig. 2 is a side elevation of the tube of Fig. l;

Fig. 3 is an internal end view of one of the end pieces; and

Fig. i is a side elevation of one of the end pieces.

Referring more particularly to the drawings, A is a thin paper tubewhose length is approximately the same as its diameter. BB are endpieces fitting within the paper tube having cylindrical portions C andtheir inner edges tapered shghtly as at D and being glued in place at-Cso that their external surfaces are substantially flush against thetube. These end pieces are provided with central holes E whose diameteris approximately one-third (-7 of the diameter of the tube, these holesbeing adapted to receive the spindle of the winding machine when theball is being wound upon the core. F is the thread wound upon the coreshown in dots. In gluing the end pieces the glue is applied to thecylindrical surfaces 0 or to the inner edges of the tube or to both andthe end pieces thereafter inse'rted. The lued surface on each end pieceis substantiafiy confined to its cylindrical portion C and the part ofthe tube contactmg therewith or to these portions and a narrow circleclose'to the inner edge of the portion 0 at the apex of the acute angleformed by the taper between the end piece and the inner surface of thetube instead of being distributed over an area whose width is equal tothe thickness of the end piece. This concentrates the glue so as to makethe mass for any given area substantial and inasmuch as less surface iscoated reduces the amount of glue employed, and yet the end pieces areof sufficient thickness to be strong. The taper also makes the insertionof the end pieces easy to accomplish.

Cores so constructed can be easily and cheaply made and of greataccuracy and uniformity.

What T claim is: v

1. A core for balls of yarn, thread and the like, consisting of a thinpaper tube and circular end pieces having centrally located holes andfitting within the ends of said tube and glued therein, said end pieceshaving their outer portions cylindrical and being inwardly tapered froma point slightly removed from their outer ends and having their outersurfaces substantially flush with the ends of said tube.

' 2. A core for balls of yarn, thread and the like, consisting of a thlnpaper tube and circular end pieces having centrally located holes andfitting within the ends of said tube and glued therein, said end pieceshaving their outer portions cylindrical and being inwardly tapered froma oint slightly removed from their outer en s and having their outersurfaces substantially 'flush with the ends'of said tube, the length ofsaid tube being approximately equal to the diameter of said end pieces.

3. A core for balls of yarn, thread and the like, consisting of a thinpaper tube and circular end pieces having centrally located holes andfitting within the ends of 'said tube and glued therein, said end pieceshaving their outer portions cylindrical and being inwardly tapered froma point slightly removed from their outer ends and having their outersurfaces substantially flush with the ends of said tube, the diameter ofsaidholes being approximately one-third (i) the diameter of said endpieces. ARTHUR H. SCHLOERB.

